Upper San Leandro (USL) Seismic Control Valve Project


SCH Number
Public Agency
East Bay Municipal Utility District (EBMUD)
Document Title
Upper San Leandro (USL) Seismic Control Valve Project
Document Type
NOE - Notice of Exemption
Document Description
The Project will install a seismic accelerometer, 25 kilowatt emergency generator, 100 gallon propane fuel tank, and associated paving and fencing. The purpose of the Project is to automatically close the existing motor operated valves at the USL Reservoir outlet tower and prevent the release of water from USL Reservoir in the event of an earthquake induced pipeline failure. See Attachment A for additional information.

Contact Information

Shelly Dean
Agency Name
East Bay Municipal Utility District
Contact Types
Lead/Public Agency

Agency Name
East Bay Municipal Utility District
Contact Types
Project Applicant


Northern California
Other Location Info
Shore of USL Reservoir on EBMUD-owned watershed land, Alameda County, see attached Figure 1.
Other Information
The Project site is located off Redwood Road through an EBMUD access road which leads to the shore of USL Reservoir near the USL Reservoir outlet tower (see Figure 1). The access road will be used for worker and equipment access for the Project. USL Reservoir Water Supply: USL Reservoir is one of the critical storage elements of EBMUD's water supply system and has a capacity of approximately 38,905 acre feet. The flow of water from USL Reservoir to the USL Water Treatment Plant (WTP) is regulated by the USL Reservoir outlet tower, which is a 94-foot-high concrete tower equipped with a series of valves and connected at its base to an outlet tunnel. From the USL Reservoir outlet tower, untreated water flows through a 54-inch diameter tunnel for approximately 1.3 miles before reaching the "West Portal" in Oakland, where the tunnel transitions to a pipeline for approximately 1 mile before reaching the USL WTP in Oakland.

Notice of Exemption

Exempt Status
Categorical Exemption
Type, Section or Code
15301 and 15303
Reasons for Exemption
Reasons why project is exempt: The Project is exempt under 15301 because it involves no expansion of the USL Reservoir's capacity and entails the repair and minor alteration of an existing public facility. The project is also exempt under 15303, since it involves the construction and location of limited numbers of new small facilities or structures. The Project will have no significant environmental effects relative to location, cumulative impact, or significant effects due to unusual circumstances, hazardous waste, or historical resources, pursuant to Section 15300.2 of the CEQA Guidelines.


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